Siemens SITRANS P Compact Operating Instructions page 31

Mounting on the closed container (no or little condensate formation)
Formula
p
MA
p
ME
h
U
h
O
p
When taking measurements in a closed container without or with little condensate formation,
the low pressure line is not filled.
Lay the line in such a way that condensation pockets do not form. If required, you need to install
a condensation container below the low pressure line of the pressure transmitter.
The process connection on the low pressure side is a female thread
Lay the line for the low pressure using a seamless steel tube 12 mm x 1.5 mm.
SITRANS P320/P420
Compact Operating Instructions, 01/2021, A5E38874562-AC
= ρ · g · h
U
= ρ · g · h
O
Lower filling level
Upper filling level
Pressure
p Lower range value
LRV
p Upper range value
URV
ρ Density of the measured medium in the container
g Acceleration due to gravity
Installing/mounting
4.4 Installation (level)
/ -18 NPT or an oval flange.
1
4
31